when it is safe () the road

问题描述:

when it is safe () the road
1个回答 分类:英语 2014-12-07

问题解答:

我来补答
when it is safe (on) the road
再问: 选项里面好像没有on哦,只有crossing、cross、across、to cross
再答: 用cross the road过马路的意思,或者 go across the road
 
 
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